A labor dispute that promoted Veolia Transportation officials to lock out about 60 union bus workers has led union reps to file charges against the company with the National Labor Relations Board.

According to a letter from Cornele Overstreet, Regional Director of the NLRB in Phoenix, Union and Veolia officials have until October 15 to file statements with his office outlining their case or defense.

The International Brotherhood of Teamsters Local 104 alleges that Veolia has delayed or refused to provide the union with information it has requested, refused to accept agreements to its own proposals and threatened employees with losing their jobs.

Arizona may be a right-to-work state without a long history of unions, but federal laws outline how company and union reps conduct negotiations.

Meanwhile, Veolia continues to negotiate with the Amalgamated Transit Union Local 1433.

Based on a post on ATU's website, another meeting is scheduled for October 21.

"After meeting for the last three days, we were only able to get tentative agreements on three articles..." union leaders posted. "We have been very consistent with not making unreasonable demands and outlandish requests ... We are fighting to keep what we have spent 30 years fighting for."

Meanwhile, the third union representing Veolia employees (International Union of Operating Engineers Local 428) has signed a five-year agreement with Veolia.